Neonatal nausea, dry vomiting and vomiting may be caused by physiological development, improper breastfeeding, neonatal jaundice and abnormal development of the digestive system, etc. After the specific causes are clarified, early targeted treatment should be carried out: 1. Physiological development: It may be related to the development of the stomach structure of the newborn. The stomach structure of a newborn child is different from that of an adult. The stomach of a newborn is horizontal, the pancreatic sphincter is relaxed and the pyloric sphincter is tense, so the newborn is prone to nausea, dry vomiting and vomiting after eating milk; 2. Improper breastfeeding: It may be related to the incorrect posture of some new mothers and the incorrect method of breastfeeding. For example, when the child is breastfeeding, if the mother’s nipple and areola are not wrapped in the mouth, it will cause the newborn to suck in a lot of air. And if you fail to burp in time after eating milk or burp in the wrong way or feeding degree, it may lead to newborn’s nausea, dry vomiting, or spitting up when burping. It may also be due to too large a pacifier on the bottle, stuffing too much part of the mouth and touching the epiglottis, causing nausea and vomiting; 3. Neonatal jaundice: It may also be due to jaundice at the neonatal stage, while jaundice leads to abnormal liver function, which in turn will also affect the digestive system, leading to indigestion, gastrointestinal disorders, and newborns will also experience nausea, dry vomiting and vomiting; 4. Digestive system Developmental abnormalities: In addition to this, there may be a certain relationship with abnormalities in the development of the digestive system, for example, some newborns may have congenital hypertrophic pyloric stenosis, pyloric obstruction or the presence of the pyloric septum, which can also lead to nausea, dry vomiting, and vomiting symptoms are more frequent, and may even affect weight gain. If necessary, an abdominal ultrasound should be performed to clarify the diagnosis and provide timely and targeted treatment.